Why is the following true: If Parent_Object class is virtual, but Child_Object class is not, can...

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Why is the following true: If Parent_Object class is virtual, but Child_Object class is not, can...

Why is the following true:

If Parent_Object class is virtual, but Child_Object class is not, can only call Parent_Object’s constructor using Child_Object’s member initializing list, not within the body of the constructor.

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